./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe016_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe016_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 13:18:15,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:18:15,829 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:18:15,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:18:15,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:18:15,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:18:15,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:18:15,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:18:15,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:18:15,863 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:18:15,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:18:15,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:18:15,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:18:15,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:18:15,865 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:18:15,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:18:15,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:18:15,865 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:18:15,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:18:15,866 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:18:15,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:18:15,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:18:15,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:18:15,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:18:15,867 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:18:15,867 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:18:15,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:18:15,868 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:18:15,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:18:15,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:18:15,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:18:15,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:18:15,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:18:15,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:18:15,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:18:15,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:18:15,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:18:15,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:18:15,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:18:15,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:18:15,871 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:18:15,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:18:15,871 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:18:15,872 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:18:16,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:18:16,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:18:16,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:18:16,112 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:18:16,112 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:18:16,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i [2024-06-14 13:18:17,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:18:17,423 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:18:17,423 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i [2024-06-14 13:18:17,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f72462c8/8a1cf867c9ac4a93bc46ab6cd7c60207/FLAG10185a4f0 [2024-06-14 13:18:17,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f72462c8/8a1cf867c9ac4a93bc46ab6cd7c60207 [2024-06-14 13:18:17,452 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:18:17,452 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:18:17,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe016_rmo.opt.yml/witness.yml [2024-06-14 13:18:17,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:18:17,723 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:18:17,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:18:17,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:18:17,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:18:17,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:18:17" (1/2) ... [2024-06-14 13:18:17,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34245fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:18:17, skipping insertion in model container [2024-06-14 13:18:17,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:18:17" (1/2) ... [2024-06-14 13:18:17,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@313183d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:18:17, skipping insertion in model container [2024-06-14 13:18:17,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:18:17" (2/2) ... [2024-06-14 13:18:17,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34245fbb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:17, skipping insertion in model container [2024-06-14 13:18:17,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:18:17" (2/2) ... [2024-06-14 13:18:17,731 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:18:17,893 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:18:17,894 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || ((((0 <= *__unbuffered_p2_EAX$read_delayed_var && *__unbuffered_p2_EAX$read_delayed_var <= 2) && *__unbuffered_p2_EAX$read_delayed_var <= 127) && __unbuffered_p2_EAX$read_delayed_var == & x) && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-14 13:18:17,894 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || ((((0 <= *__unbuffered_p2_EAX$read_delayed_var && *__unbuffered_p2_EAX$read_delayed_var <= 2) && *__unbuffered_p2_EAX$read_delayed_var <= 127) && __unbuffered_p2_EAX$read_delayed_var == & x) && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-14 13:18:17,894 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || ((((0 <= *__unbuffered_p2_EAX$read_delayed_var && *__unbuffered_p2_EAX$read_delayed_var <= 2) && *__unbuffered_p2_EAX$read_delayed_var <= 127) && __unbuffered_p2_EAX$read_delayed_var == & x) && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-14 13:18:17,895 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || ((((0 <= *__unbuffered_p2_EAX$read_delayed_var && *__unbuffered_p2_EAX$read_delayed_var <= 2) && *__unbuffered_p2_EAX$read_delayed_var <= 127) && __unbuffered_p2_EAX$read_delayed_var == & x) && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-14 13:18:17,895 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:18:17,895 INFO L106 edCorrectnessWitness]: ghost_update [L861-L861] multithreaded = 1; [2024-06-14 13:18:17,931 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:18:18,253 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:18:18,263 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:18:18,447 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:18:18,478 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:18:18,478 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18 WrapperNode [2024-06-14 13:18:18,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:18:18,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:18:18,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:18:18,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:18:18,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,563 INFO L138 Inliner]: procedures = 176, calls = 122, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 327 [2024-06-14 13:18:18,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:18:18,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:18:18,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:18:18,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:18:18,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,614 INFO L175 MemorySlicer]: Split 76 memory accesses to 2 slices as follows [2, 74]. 97 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-06-14 13:18:18,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:18:18,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:18:18,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:18:18,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:18:18,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (1/1) ... [2024-06-14 13:18:18,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:18:18,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:18:18,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 13:18:18,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 13:18:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-14 13:18:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-14 13:18:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-14 13:18:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-14 13:18:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:18:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:18:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:18:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:18:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:18:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:18:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 13:18:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 13:18:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-14 13:18:18,724 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-14 13:18:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:18:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 13:18:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:18:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:18:18,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:18:18,727 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:18:18,880 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:18:18,881 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:18:19,432 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:18:19,432 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:18:20,025 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:18:20,025 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:18:20,026 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:18:20 BoogieIcfgContainer [2024-06-14 13:18:20,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:18:20,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:18:20,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:18:20,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:18:20,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:18:17" (1/4) ... [2024-06-14 13:18:20,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d78709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:18:20, skipping insertion in model container [2024-06-14 13:18:20,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:18:17" (2/4) ... [2024-06-14 13:18:20,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d78709 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:18:20, skipping insertion in model container [2024-06-14 13:18:20,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:18:18" (3/4) ... [2024-06-14 13:18:20,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d78709 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:18:20, skipping insertion in model container [2024-06-14 13:18:20,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:18:20" (4/4) ... [2024-06-14 13:18:20,033 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.opt.i [2024-06-14 13:18:20,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:18:20,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 13:18:20,047 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:18:20,104 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:18:20,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-14 13:18:20,180 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-14 13:18:20,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:18:20,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 13:18:20,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-14 13:18:20,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-14 13:18:20,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:18:20,203 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5828a9d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:18:20,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-14 13:18:20,208 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:18:20,208 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 13:18:20,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:18:20,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:18:20,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:18:20,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:18:20,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:18:20,215 INFO L85 PathProgramCache]: Analyzing trace with hash 764903752, now seen corresponding path program 1 times [2024-06-14 13:18:20,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:18:20,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746622369] [2024-06-14 13:18:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:18:20,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:18:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:18:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:18:22,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:18:22,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746622369] [2024-06-14 13:18:22,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746622369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:18:22,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:18:22,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:18:22,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437085945] [2024-06-14 13:18:22,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:18:22,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:18:22,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:18:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:18:22,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:18:22,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-06-14 13:18:22,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:22,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:18:22,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-06-14 13:18:22,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:18:24,824 INFO L124 PetriNetUnfolderBase]: 8561/11715 cut-off events. [2024-06-14 13:18:24,824 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-06-14 13:18:24,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23793 conditions, 11715 events. 8561/11715 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 59686 event pairs, 6368 based on Foata normal form. 1/11535 useless extension candidates. Maximal degree in co-relation 23777. Up to 11694 conditions per place. [2024-06-14 13:18:24,884 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 50 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-14 13:18:24,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 251 flow [2024-06-14 13:18:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:18:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:18:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-14 13:18:24,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408805031446541 [2024-06-14 13:18:24,895 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 86 transitions. [2024-06-14 13:18:24,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 251 flow [2024-06-14 13:18:24,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 244 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 13:18:24,900 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-14 13:18:24,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-14 13:18:24,904 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-14 13:18:24,904 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-14 13:18:24,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:24,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:18:24,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:18:24,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:18:24,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:18:24,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:18:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1846779931, now seen corresponding path program 1 times [2024-06-14 13:18:24,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:18:24,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727428027] [2024-06-14 13:18:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:18:24,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:18:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:18:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:18:27,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:18:27,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727428027] [2024-06-14 13:18:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727428027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:18:27,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:18:27,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 13:18:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429707255] [2024-06-14 13:18:27,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:18:27,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 13:18:27,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:18:27,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 13:18:27,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 13:18:27,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:18:27,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:27,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:18:27,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:18:27,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:18:29,771 INFO L124 PetriNetUnfolderBase]: 10503/14345 cut-off events. [2024-06-14 13:18:29,772 INFO L125 PetriNetUnfolderBase]: For 2656/2678 co-relation queries the response was YES. [2024-06-14 13:18:29,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32808 conditions, 14345 events. 10503/14345 cut-off events. For 2656/2678 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 72948 event pairs, 4227 based on Foata normal form. 26/14350 useless extension candidates. Maximal degree in co-relation 32793. Up to 13871 conditions per place. [2024-06-14 13:18:29,822 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 73 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-06-14 13:18:29,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 425 flow [2024-06-14 13:18:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:18:29,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:18:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-14 13:18:29,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2024-06-14 13:18:29,824 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 120 transitions. [2024-06-14 13:18:29,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 425 flow [2024-06-14 13:18:29,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:18:29,829 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 225 flow [2024-06-14 13:18:29,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-06-14 13:18:29,830 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-06-14 13:18:29,830 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 225 flow [2024-06-14 13:18:29,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:29,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:18:29,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:18:29,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:18:29,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:18:29,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:18:29,832 INFO L85 PathProgramCache]: Analyzing trace with hash 394133826, now seen corresponding path program 1 times [2024-06-14 13:18:29,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:18:29,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957594481] [2024-06-14 13:18:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:18:29,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:18:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:18:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:18:33,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:18:33,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957594481] [2024-06-14 13:18:33,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957594481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:18:33,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:18:33,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:18:33,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785562713] [2024-06-14 13:18:33,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:18:33,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:18:33,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:18:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:18:33,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:18:33,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:18:33,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:33,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:18:33,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:18:33,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:18:36,040 INFO L124 PetriNetUnfolderBase]: 10779/14769 cut-off events. [2024-06-14 13:18:36,040 INFO L125 PetriNetUnfolderBase]: For 9988/10074 co-relation queries the response was YES. [2024-06-14 13:18:36,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39345 conditions, 14769 events. 10779/14769 cut-off events. For 9988/10074 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 75764 event pairs, 3371 based on Foata normal form. 84/14832 useless extension candidates. Maximal degree in co-relation 39327. Up to 13873 conditions per place. [2024-06-14 13:18:36,098 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 87 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-06-14 13:18:36,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 108 transitions, 575 flow [2024-06-14 13:18:36,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:18:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:18:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-06-14 13:18:36,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-06-14 13:18:36,100 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 225 flow. Second operand 5 states and 145 transitions. [2024-06-14 13:18:36,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 108 transitions, 575 flow [2024-06-14 13:18:36,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 108 transitions, 569 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-14 13:18:36,105 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 282 flow [2024-06-14 13:18:36,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-14 13:18:36,105 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-14 13:18:36,106 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 282 flow [2024-06-14 13:18:36,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:36,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:18:36,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:18:36,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:18:36,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:18:36,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:18:36,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1781180033, now seen corresponding path program 1 times [2024-06-14 13:18:36,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:18:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863246834] [2024-06-14 13:18:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:18:36,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:18:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:18:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:18:37,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:18:37,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863246834] [2024-06-14 13:18:37,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863246834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:18:37,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:18:37,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:18:37,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844447067] [2024-06-14 13:18:37,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:18:37,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:18:37,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:18:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:18:37,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:18:37,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-06-14 13:18:37,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:37,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:18:37,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-06-14 13:18:37,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:18:40,468 INFO L124 PetriNetUnfolderBase]: 8823/12116 cut-off events. [2024-06-14 13:18:40,468 INFO L125 PetriNetUnfolderBase]: For 14174/14226 co-relation queries the response was YES. [2024-06-14 13:18:40,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35292 conditions, 12116 events. 8823/12116 cut-off events. For 14174/14226 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 62414 event pairs, 3908 based on Foata normal form. 46/12144 useless extension candidates. Maximal degree in co-relation 35271. Up to 11798 conditions per place. [2024-06-14 13:18:40,511 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 65 selfloop transitions, 15 changer transitions 0/85 dead transitions. [2024-06-14 13:18:40,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 504 flow [2024-06-14 13:18:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:18:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:18:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-14 13:18:40,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46037735849056605 [2024-06-14 13:18:40,513 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 282 flow. Second operand 5 states and 122 transitions. [2024-06-14 13:18:40,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 504 flow [2024-06-14 13:18:40,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 85 transitions, 467 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 13:18:40,520 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 288 flow [2024-06-14 13:18:40,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-06-14 13:18:40,520 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-14 13:18:40,521 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 288 flow [2024-06-14 13:18:40,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:40,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:18:40,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:18:40,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:18:40,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:18:40,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:18:40,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1938675718, now seen corresponding path program 1 times [2024-06-14 13:18:40,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:18:40,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447981861] [2024-06-14 13:18:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:18:40,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:18:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:18:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:18:43,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:18:43,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447981861] [2024-06-14 13:18:43,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447981861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:18:43,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:18:43,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:18:43,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515984419] [2024-06-14 13:18:43,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:18:43,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:18:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:18:43,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:18:43,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:18:43,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-06-14 13:18:43,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 288 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:43,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:18:43,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-06-14 13:18:43,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:18:46,207 INFO L124 PetriNetUnfolderBase]: 9052/12459 cut-off events. [2024-06-14 13:18:46,207 INFO L125 PetriNetUnfolderBase]: For 17874/17926 co-relation queries the response was YES. [2024-06-14 13:18:46,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37078 conditions, 12459 events. 9052/12459 cut-off events. For 17874/17926 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 64665 event pairs, 3505 based on Foata normal form. 70/12511 useless extension candidates. Maximal degree in co-relation 37055. Up to 11795 conditions per place. [2024-06-14 13:18:46,271 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 80 selfloop transitions, 18 changer transitions 0/103 dead transitions. [2024-06-14 13:18:46,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 103 transitions, 606 flow [2024-06-14 13:18:46,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:18:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:18:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-14 13:18:46,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46855345911949686 [2024-06-14 13:18:46,274 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 288 flow. Second operand 6 states and 149 transitions. [2024-06-14 13:18:46,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 103 transitions, 606 flow [2024-06-14 13:18:46,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 103 transitions, 577 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-14 13:18:46,289 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 334 flow [2024-06-14 13:18:46,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-06-14 13:18:46,290 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-14 13:18:46,290 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 334 flow [2024-06-14 13:18:46,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:46,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:18:46,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:18:46,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:18:46,291 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:18:46,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:18:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash -685493877, now seen corresponding path program 1 times [2024-06-14 13:18:46,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:18:46,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658303779] [2024-06-14 13:18:46,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:18:46,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:18:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:18:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:18:48,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:18:48,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658303779] [2024-06-14 13:18:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658303779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:18:48,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:18:48,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:18:48,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045222735] [2024-06-14 13:18:48,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:18:48,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:18:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:18:48,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:18:48,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:18:49,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-06-14 13:18:49,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:49,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:18:49,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-06-14 13:18:49,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:18:51,541 INFO L124 PetriNetUnfolderBase]: 9045/12437 cut-off events. [2024-06-14 13:18:51,541 INFO L125 PetriNetUnfolderBase]: For 24351/24351 co-relation queries the response was YES. [2024-06-14 13:18:51,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39501 conditions, 12437 events. 9045/12437 cut-off events. For 24351/24351 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 64058 event pairs, 4806 based on Foata normal form. 2/12435 useless extension candidates. Maximal degree in co-relation 39477. Up to 12405 conditions per place. [2024-06-14 13:18:51,602 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 69 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-14 13:18:51,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 84 transitions, 564 flow [2024-06-14 13:18:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:18:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:18:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-14 13:18:51,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41509433962264153 [2024-06-14 13:18:51,604 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 334 flow. Second operand 5 states and 110 transitions. [2024-06-14 13:18:51,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 84 transitions, 564 flow [2024-06-14 13:18:51,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 521 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 13:18:51,619 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 356 flow [2024-06-14 13:18:51,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-06-14 13:18:51,620 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-14 13:18:51,620 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 356 flow [2024-06-14 13:18:51,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:51,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:18:51,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:18:51,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:18:51,621 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:18:51,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:18:51,622 INFO L85 PathProgramCache]: Analyzing trace with hash -71927993, now seen corresponding path program 1 times [2024-06-14 13:18:51,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:18:51,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694478013] [2024-06-14 13:18:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:18:51,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:18:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:18:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:18:54,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:18:54,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694478013] [2024-06-14 13:18:54,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694478013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:18:54,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:18:54,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:18:54,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660642144] [2024-06-14 13:18:54,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:18:54,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:18:54,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:18:54,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:18:54,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:18:54,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:18:54,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 356 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:54,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:18:54,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:18:54,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:18:57,429 INFO L124 PetriNetUnfolderBase]: 10873/14932 cut-off events. [2024-06-14 13:18:57,430 INFO L125 PetriNetUnfolderBase]: For 38282/38395 co-relation queries the response was YES. [2024-06-14 13:18:57,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49371 conditions, 14932 events. 10873/14932 cut-off events. For 38282/38395 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 77025 event pairs, 2633 based on Foata normal form. 81/14981 useless extension candidates. Maximal degree in co-relation 49346. Up to 13311 conditions per place. [2024-06-14 13:18:57,521 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 88 selfloop transitions, 21 changer transitions 0/113 dead transitions. [2024-06-14 13:18:57,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 113 transitions, 746 flow [2024-06-14 13:18:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:18:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:18:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-14 13:18:57,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-14 13:18:57,524 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 356 flow. Second operand 6 states and 144 transitions. [2024-06-14 13:18:57,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 113 transitions, 746 flow [2024-06-14 13:18:57,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 113 transitions, 701 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 13:18:57,536 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 410 flow [2024-06-14 13:18:57,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-06-14 13:18:57,538 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-14 13:18:57,538 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 410 flow [2024-06-14 13:18:57,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:18:57,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:18:57,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:18:57,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:18:57,538 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:18:57,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:18:57,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1112494553, now seen corresponding path program 1 times [2024-06-14 13:18:57,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:18:57,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747454444] [2024-06-14 13:18:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:18:57,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:18:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:19:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:19:00,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:19:00,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747454444] [2024-06-14 13:19:00,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747454444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:19:00,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:19:00,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:19:00,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209477744] [2024-06-14 13:19:00,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:19:00,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:19:00,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:19:00,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:19:00,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:19:00,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:19:00,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 410 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:00,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:19:00,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:19:00,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:19:03,371 INFO L124 PetriNetUnfolderBase]: 10819/14854 cut-off events. [2024-06-14 13:19:03,372 INFO L125 PetriNetUnfolderBase]: For 48360/48477 co-relation queries the response was YES. [2024-06-14 13:19:03,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51321 conditions, 14854 events. 10819/14854 cut-off events. For 48360/48477 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 76299 event pairs, 2603 based on Foata normal form. 81/14903 useless extension candidates. Maximal degree in co-relation 51296. Up to 13287 conditions per place. [2024-06-14 13:19:03,435 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 85 selfloop transitions, 21 changer transitions 0/110 dead transitions. [2024-06-14 13:19:03,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 708 flow [2024-06-14 13:19:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:19:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:19:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-14 13:19:03,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-06-14 13:19:03,438 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 410 flow. Second operand 6 states and 141 transitions. [2024-06-14 13:19:03,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 708 flow [2024-06-14 13:19:03,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 675 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-14 13:19:03,475 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 412 flow [2024-06-14 13:19:03,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=412, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-06-14 13:19:03,476 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-06-14 13:19:03,476 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 412 flow [2024-06-14 13:19:03,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:03,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:19:03,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:19:03,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:19:03,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:19:03,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:19:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash 224528066, now seen corresponding path program 1 times [2024-06-14 13:19:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:19:03,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958425787] [2024-06-14 13:19:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:19:03,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:19:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:19:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:19:06,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:19:06,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958425787] [2024-06-14 13:19:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958425787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:19:06,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:19:06,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:19:06,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740088626] [2024-06-14 13:19:06,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:19:06,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:19:06,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:19:06,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:19:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:19:06,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:19:06,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 412 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:06,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:19:06,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:19:06,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:19:10,026 INFO L124 PetriNetUnfolderBase]: 10845/14860 cut-off events. [2024-06-14 13:19:10,027 INFO L125 PetriNetUnfolderBase]: For 54762/54762 co-relation queries the response was YES. [2024-06-14 13:19:10,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52773 conditions, 14860 events. 10845/14860 cut-off events. For 54762/54762 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 76227 event pairs, 5232 based on Foata normal form. 8/14865 useless extension candidates. Maximal degree in co-relation 52746. Up to 14737 conditions per place. [2024-06-14 13:19:10,093 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 95 selfloop transitions, 20 changer transitions 0/119 dead transitions. [2024-06-14 13:19:10,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 119 transitions, 858 flow [2024-06-14 13:19:10,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:19:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:19:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-14 13:19:10,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41823899371069184 [2024-06-14 13:19:10,095 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 412 flow. Second operand 6 states and 133 transitions. [2024-06-14 13:19:10,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 119 transitions, 858 flow [2024-06-14 13:19:10,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 119 transitions, 796 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 13:19:10,150 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 543 flow [2024-06-14 13:19:10,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=543, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2024-06-14 13:19:10,151 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-14 13:19:10,151 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 543 flow [2024-06-14 13:19:10,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:10,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:19:10,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:19:10,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:19:10,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:19:10,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:19:10,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1634331286, now seen corresponding path program 1 times [2024-06-14 13:19:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:19:10,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429445103] [2024-06-14 13:19:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:19:10,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:19:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:19:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:19:12,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:19:12,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429445103] [2024-06-14 13:19:12,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429445103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:19:12,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:19:12,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:19:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175440529] [2024-06-14 13:19:12,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:19:12,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:19:12,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:19:12,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:19:12,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:19:12,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-06-14 13:19:12,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 543 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:12,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:19:12,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-06-14 13:19:12,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:19:16,069 INFO L124 PetriNetUnfolderBase]: 10624/14721 cut-off events. [2024-06-14 13:19:16,069 INFO L125 PetriNetUnfolderBase]: For 70318/70355 co-relation queries the response was YES. [2024-06-14 13:19:16,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56575 conditions, 14721 events. 10624/14721 cut-off events. For 70318/70355 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 76596 event pairs, 4079 based on Foata normal form. 36/14732 useless extension candidates. Maximal degree in co-relation 56545. Up to 13770 conditions per place. [2024-06-14 13:19:16,154 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 98 selfloop transitions, 36 changer transitions 0/142 dead transitions. [2024-06-14 13:19:16,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 142 transitions, 1107 flow [2024-06-14 13:19:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:19:16,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:19:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-14 13:19:16,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 13:19:16,156 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 543 flow. Second operand 7 states and 159 transitions. [2024-06-14 13:19:16,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 142 transitions, 1107 flow [2024-06-14 13:19:16,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 142 transitions, 1085 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-14 13:19:16,243 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 772 flow [2024-06-14 13:19:16,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=772, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2024-06-14 13:19:16,244 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-06-14 13:19:16,244 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 772 flow [2024-06-14 13:19:16,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:16,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:19:16,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:19:16,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:19:16,244 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:19:16,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:19:16,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1142140876, now seen corresponding path program 2 times [2024-06-14 13:19:16,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:19:16,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626950272] [2024-06-14 13:19:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:19:16,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:19:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:19:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:19:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:19:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626950272] [2024-06-14 13:19:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626950272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:19:18,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:19:18,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:19:18,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98036199] [2024-06-14 13:19:18,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:19:18,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:19:18,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:19:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:19:18,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:19:18,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-06-14 13:19:18,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 772 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:18,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:19:18,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-06-14 13:19:18,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:19:21,802 INFO L124 PetriNetUnfolderBase]: 10857/15005 cut-off events. [2024-06-14 13:19:21,803 INFO L125 PetriNetUnfolderBase]: For 91414/91414 co-relation queries the response was YES. [2024-06-14 13:19:21,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63272 conditions, 15005 events. 10857/15005 cut-off events. For 91414/91414 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 78034 event pairs, 5137 based on Foata normal form. 16/15016 useless extension candidates. Maximal degree in co-relation 63237. Up to 14588 conditions per place. [2024-06-14 13:19:21,883 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 115 selfloop transitions, 24 changer transitions 0/147 dead transitions. [2024-06-14 13:19:21,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 147 transitions, 1269 flow [2024-06-14 13:19:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:19:21,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:19:21,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-14 13:19:21,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4123989218328841 [2024-06-14 13:19:21,886 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 772 flow. Second operand 7 states and 153 transitions. [2024-06-14 13:19:21,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 147 transitions, 1269 flow [2024-06-14 13:19:22,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 147 transitions, 1231 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-14 13:19:22,030 INFO L231 Difference]: Finished difference. Result has 92 places, 113 transitions, 914 flow [2024-06-14 13:19:22,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=914, PETRI_PLACES=92, PETRI_TRANSITIONS=113} [2024-06-14 13:19:22,031 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-14 13:19:22,031 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 113 transitions, 914 flow [2024-06-14 13:19:22,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:22,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:19:22,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:19:22,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:19:22,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:19:22,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:19:22,032 INFO L85 PathProgramCache]: Analyzing trace with hash 697754316, now seen corresponding path program 1 times [2024-06-14 13:19:22,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:19:22,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087969211] [2024-06-14 13:19:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:19:22,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:19:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:19:24,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:19:24,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:19:24,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087969211] [2024-06-14 13:19:24,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087969211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:19:24,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:19:24,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:19:24,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810330365] [2024-06-14 13:19:24,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:19:24,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:19:24,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:19:24,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:19:24,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:19:24,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:19:24,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 113 transitions, 914 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:24,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:19:24,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:19:24,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:19:28,218 INFO L124 PetriNetUnfolderBase]: 11387/15609 cut-off events. [2024-06-14 13:19:28,219 INFO L125 PetriNetUnfolderBase]: For 102561/102671 co-relation queries the response was YES. [2024-06-14 13:19:28,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66240 conditions, 15609 events. 11387/15609 cut-off events. For 102561/102671 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 80300 event pairs, 4211 based on Foata normal form. 81/15652 useless extension candidates. Maximal degree in co-relation 66201. Up to 14557 conditions per place. [2024-06-14 13:19:28,318 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 110 selfloop transitions, 46 changer transitions 0/160 dead transitions. [2024-06-14 13:19:28,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 160 transitions, 1476 flow [2024-06-14 13:19:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:19:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:19:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-14 13:19:28,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2024-06-14 13:19:28,320 INFO L175 Difference]: Start difference. First operand has 92 places, 113 transitions, 914 flow. Second operand 6 states and 147 transitions. [2024-06-14 13:19:28,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 160 transitions, 1476 flow [2024-06-14 13:19:28,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 160 transitions, 1392 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-14 13:19:28,472 INFO L231 Difference]: Finished difference. Result has 93 places, 117 transitions, 982 flow [2024-06-14 13:19:28,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=982, PETRI_PLACES=93, PETRI_TRANSITIONS=117} [2024-06-14 13:19:28,473 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2024-06-14 13:19:28,473 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 117 transitions, 982 flow [2024-06-14 13:19:28,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:28,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:19:28,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:19:28,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:19:28,473 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:19:28,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:19:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash 936322986, now seen corresponding path program 2 times [2024-06-14 13:19:28,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:19:28,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747311511] [2024-06-14 13:19:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:19:28,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:19:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:19:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:19:31,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:19:31,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747311511] [2024-06-14 13:19:31,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747311511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:19:31,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:19:31,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:19:31,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229839710] [2024-06-14 13:19:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:19:31,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:19:31,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:19:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:19:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:19:31,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:19:31,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 117 transitions, 982 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:31,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:19:31,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:19:31,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:19:34,177 INFO L124 PetriNetUnfolderBase]: 11325/15495 cut-off events. [2024-06-14 13:19:34,177 INFO L125 PetriNetUnfolderBase]: For 111660/111668 co-relation queries the response was YES. [2024-06-14 13:19:34,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66732 conditions, 15495 events. 11325/15495 cut-off events. For 111660/111668 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 79367 event pairs, 5169 based on Foata normal form. 18/15508 useless extension candidates. Maximal degree in co-relation 66693. Up to 15227 conditions per place. [2024-06-14 13:19:34,258 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 124 selfloop transitions, 24 changer transitions 0/152 dead transitions. [2024-06-14 13:19:34,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 152 transitions, 1372 flow [2024-06-14 13:19:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:19:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:19:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-14 13:19:34,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39892183288409705 [2024-06-14 13:19:34,260 INFO L175 Difference]: Start difference. First operand has 93 places, 117 transitions, 982 flow. Second operand 7 states and 148 transitions. [2024-06-14 13:19:34,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 152 transitions, 1372 flow [2024-06-14 13:19:34,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 152 transitions, 1242 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-14 13:19:34,460 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 911 flow [2024-06-14 13:19:34,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=911, PETRI_PLACES=97, PETRI_TRANSITIONS=117} [2024-06-14 13:19:34,461 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2024-06-14 13:19:34,461 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 911 flow [2024-06-14 13:19:34,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:34,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:19:34,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:19:34,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:19:34,462 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:19:34,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:19:34,462 INFO L85 PathProgramCache]: Analyzing trace with hash 920610977, now seen corresponding path program 1 times [2024-06-14 13:19:34,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:19:34,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750452555] [2024-06-14 13:19:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:19:34,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:19:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:19:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:19:37,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:19:37,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750452555] [2024-06-14 13:19:37,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750452555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:19:37,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:19:37,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:19:37,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142180606] [2024-06-14 13:19:37,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:19:37,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:19:37,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:19:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:19:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:19:37,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:19:37,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 911 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:37,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:19:37,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:19:37,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:19:40,660 INFO L124 PetriNetUnfolderBase]: 11491/15709 cut-off events. [2024-06-14 13:19:40,660 INFO L125 PetriNetUnfolderBase]: For 123625/123633 co-relation queries the response was YES. [2024-06-14 13:19:40,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68029 conditions, 15709 events. 11491/15709 cut-off events. For 123625/123633 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 80801 event pairs, 5140 based on Foata normal form. 14/15718 useless extension candidates. Maximal degree in co-relation 67989. Up to 15447 conditions per place. [2024-06-14 13:19:40,749 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 119 selfloop transitions, 42 changer transitions 0/165 dead transitions. [2024-06-14 13:19:40,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 165 transitions, 1505 flow [2024-06-14 13:19:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:19:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:19:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-14 13:19:40,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38207547169811323 [2024-06-14 13:19:40,751 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 911 flow. Second operand 8 states and 162 transitions. [2024-06-14 13:19:40,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 165 transitions, 1505 flow [2024-06-14 13:19:40,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 165 transitions, 1457 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-14 13:19:40,917 INFO L231 Difference]: Finished difference. Result has 101 places, 133 transitions, 1149 flow [2024-06-14 13:19:40,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1149, PETRI_PLACES=101, PETRI_TRANSITIONS=133} [2024-06-14 13:19:40,918 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2024-06-14 13:19:40,918 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 133 transitions, 1149 flow [2024-06-14 13:19:40,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:40,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:19:40,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:19:40,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:19:40,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:19:40,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:19:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1023150497, now seen corresponding path program 2 times [2024-06-14 13:19:40,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:19:40,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476464585] [2024-06-14 13:19:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:19:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:19:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:19:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:19:43,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:19:43,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476464585] [2024-06-14 13:19:43,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476464585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:19:43,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:19:43,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:19:43,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343909392] [2024-06-14 13:19:43,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:19:43,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:19:43,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:19:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:19:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:19:43,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:19:43,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 133 transitions, 1149 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:43,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:19:43,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:19:43,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:19:47,323 INFO L124 PetriNetUnfolderBase]: 11561/15799 cut-off events. [2024-06-14 13:19:47,323 INFO L125 PetriNetUnfolderBase]: For 148016/148024 co-relation queries the response was YES. [2024-06-14 13:19:47,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73414 conditions, 15799 events. 11561/15799 cut-off events. For 148016/148024 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 81271 event pairs, 5153 based on Foata normal form. 14/15808 useless extension candidates. Maximal degree in co-relation 73371. Up to 15387 conditions per place. [2024-06-14 13:19:47,438 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 129 selfloop transitions, 56 changer transitions 0/189 dead transitions. [2024-06-14 13:19:47,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 189 transitions, 1895 flow [2024-06-14 13:19:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:19:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:19:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-14 13:19:47,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42318059299191374 [2024-06-14 13:19:47,440 INFO L175 Difference]: Start difference. First operand has 101 places, 133 transitions, 1149 flow. Second operand 7 states and 157 transitions. [2024-06-14 13:19:47,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 189 transitions, 1895 flow [2024-06-14 13:19:47,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 189 transitions, 1828 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-14 13:19:47,669 INFO L231 Difference]: Finished difference. Result has 107 places, 151 transitions, 1462 flow [2024-06-14 13:19:47,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1462, PETRI_PLACES=107, PETRI_TRANSITIONS=151} [2024-06-14 13:19:47,671 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-06-14 13:19:47,671 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 151 transitions, 1462 flow [2024-06-14 13:19:47,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:47,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:19:47,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:19:47,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:19:47,672 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:19:47,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:19:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1229092085, now seen corresponding path program 1 times [2024-06-14 13:19:47,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:19:47,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415206590] [2024-06-14 13:19:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:19:47,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:19:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:19:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:19:50,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:19:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415206590] [2024-06-14 13:19:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415206590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:19:50,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:19:50,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:19:50,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793397554] [2024-06-14 13:19:50,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:19:50,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:19:50,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:19:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:19:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:19:50,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:19:50,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 151 transitions, 1462 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:50,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:19:50,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:19:50,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:19:54,675 INFO L124 PetriNetUnfolderBase]: 11849/16170 cut-off events. [2024-06-14 13:19:54,676 INFO L125 PetriNetUnfolderBase]: For 179704/179704 co-relation queries the response was YES. [2024-06-14 13:19:54,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79811 conditions, 16170 events. 11849/16170 cut-off events. For 179704/179704 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 82832 event pairs, 5079 based on Foata normal form. 16/16180 useless extension candidates. Maximal degree in co-relation 79764. Up to 15505 conditions per place. [2024-06-14 13:19:54,799 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 185 selfloop transitions, 37 changer transitions 0/226 dead transitions. [2024-06-14 13:19:54,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 226 transitions, 2381 flow [2024-06-14 13:19:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:19:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:19:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-14 13:19:54,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501347708894879 [2024-06-14 13:19:54,802 INFO L175 Difference]: Start difference. First operand has 107 places, 151 transitions, 1462 flow. Second operand 7 states and 167 transitions. [2024-06-14 13:19:54,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 226 transitions, 2381 flow [2024-06-14 13:19:55,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 226 transitions, 2285 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-06-14 13:19:55,239 INFO L231 Difference]: Finished difference. Result has 115 places, 171 transitions, 1666 flow [2024-06-14 13:19:55,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1666, PETRI_PLACES=115, PETRI_TRANSITIONS=171} [2024-06-14 13:19:55,240 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-14 13:19:55,240 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 171 transitions, 1666 flow [2024-06-14 13:19:55,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:55,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:19:55,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:19:55,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:19:55,241 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:19:55,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:19:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1057351775, now seen corresponding path program 2 times [2024-06-14 13:19:55,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:19:55,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426388038] [2024-06-14 13:19:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:19:55,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:19:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:19:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:19:58,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:19:58,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426388038] [2024-06-14 13:19:58,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426388038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:19:58,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:19:58,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:19:58,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159778293] [2024-06-14 13:19:58,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:19:58,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:19:58,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:19:58,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:19:58,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:19:58,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:19:58,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 171 transitions, 1666 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:19:58,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:19:58,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:19:58,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:20:01,782 INFO L124 PetriNetUnfolderBase]: 12005/16372 cut-off events. [2024-06-14 13:20:01,782 INFO L125 PetriNetUnfolderBase]: For 190990/190990 co-relation queries the response was YES. [2024-06-14 13:20:01,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82072 conditions, 16372 events. 12005/16372 cut-off events. For 190990/190990 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 83769 event pairs, 5188 based on Foata normal form. 16/16385 useless extension candidates. Maximal degree in co-relation 82020. Up to 15917 conditions per place. [2024-06-14 13:20:01,884 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 191 selfloop transitions, 31 changer transitions 0/226 dead transitions. [2024-06-14 13:20:01,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 226 transitions, 2485 flow [2024-06-14 13:20:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:20:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:20:01,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-14 13:20:01,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42587601078167114 [2024-06-14 13:20:01,886 INFO L175 Difference]: Start difference. First operand has 115 places, 171 transitions, 1666 flow. Second operand 7 states and 158 transitions. [2024-06-14 13:20:01,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 226 transitions, 2485 flow [2024-06-14 13:20:02,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 226 transitions, 2391 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-14 13:20:02,193 INFO L231 Difference]: Finished difference. Result has 121 places, 181 transitions, 1767 flow [2024-06-14 13:20:02,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1767, PETRI_PLACES=121, PETRI_TRANSITIONS=181} [2024-06-14 13:20:02,193 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-06-14 13:20:02,194 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 181 transitions, 1767 flow [2024-06-14 13:20:02,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:02,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:20:02,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:20:02,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:20:02,194 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:20:02,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:20:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1934859699, now seen corresponding path program 3 times [2024-06-14 13:20:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:20:02,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570991735] [2024-06-14 13:20:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:20:02,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:20:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:20:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:20:05,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:20:05,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570991735] [2024-06-14 13:20:05,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570991735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:20:05,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:20:05,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:20:05,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186020791] [2024-06-14 13:20:05,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:20:05,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:20:05,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:20:05,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:20:05,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:20:05,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:20:05,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 181 transitions, 1767 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:05,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:20:05,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:20:05,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:20:09,254 INFO L124 PetriNetUnfolderBase]: 12057/16440 cut-off events. [2024-06-14 13:20:09,254 INFO L125 PetriNetUnfolderBase]: For 210073/210073 co-relation queries the response was YES. [2024-06-14 13:20:09,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84267 conditions, 16440 events. 12057/16440 cut-off events. For 210073/210073 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 84213 event pairs, 5168 based on Foata normal form. 16/16453 useless extension candidates. Maximal degree in co-relation 84212. Up to 15961 conditions per place. [2024-06-14 13:20:09,371 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 201 selfloop transitions, 39 changer transitions 0/244 dead transitions. [2024-06-14 13:20:09,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 244 transitions, 2567 flow [2024-06-14 13:20:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:20:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:20:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-14 13:20:09,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41509433962264153 [2024-06-14 13:20:09,379 INFO L175 Difference]: Start difference. First operand has 121 places, 181 transitions, 1767 flow. Second operand 9 states and 198 transitions. [2024-06-14 13:20:09,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 244 transitions, 2567 flow [2024-06-14 13:20:09,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 244 transitions, 2515 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-14 13:20:09,693 INFO L231 Difference]: Finished difference. Result has 127 places, 186 transitions, 1867 flow [2024-06-14 13:20:09,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1867, PETRI_PLACES=127, PETRI_TRANSITIONS=186} [2024-06-14 13:20:09,693 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-06-14 13:20:09,693 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 186 transitions, 1867 flow [2024-06-14 13:20:09,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:09,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:20:09,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:20:09,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:20:09,699 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:20:09,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:20:09,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1023164385, now seen corresponding path program 1 times [2024-06-14 13:20:09,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:20:09,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67801411] [2024-06-14 13:20:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:20:09,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:20:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:20:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:20:13,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:20:13,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67801411] [2024-06-14 13:20:13,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67801411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:20:13,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:20:13,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:20:13,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042617936] [2024-06-14 13:20:13,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:20:13,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:20:13,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:20:13,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:20:13,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:20:13,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:20:13,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 186 transitions, 1867 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:13,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:20:13,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:20:13,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:20:17,595 INFO L124 PetriNetUnfolderBase]: 12141/16556 cut-off events. [2024-06-14 13:20:17,595 INFO L125 PetriNetUnfolderBase]: For 230228/230228 co-relation queries the response was YES. [2024-06-14 13:20:17,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86635 conditions, 16556 events. 12141/16556 cut-off events. For 230228/230228 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 84751 event pairs, 5212 based on Foata normal form. 16/16569 useless extension candidates. Maximal degree in co-relation 86578. Up to 16339 conditions per place. [2024-06-14 13:20:17,700 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 203 selfloop transitions, 25 changer transitions 0/232 dead transitions. [2024-06-14 13:20:17,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 232 transitions, 2575 flow [2024-06-14 13:20:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:20:17,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:20:17,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-14 13:20:17,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41778975741239893 [2024-06-14 13:20:17,702 INFO L175 Difference]: Start difference. First operand has 127 places, 186 transitions, 1867 flow. Second operand 7 states and 155 transitions. [2024-06-14 13:20:17,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 232 transitions, 2575 flow [2024-06-14 13:20:17,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 232 transitions, 2469 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 13:20:17,987 INFO L231 Difference]: Finished difference. Result has 127 places, 189 transitions, 1876 flow [2024-06-14 13:20:17,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1876, PETRI_PLACES=127, PETRI_TRANSITIONS=189} [2024-06-14 13:20:17,987 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-06-14 13:20:17,987 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 189 transitions, 1876 flow [2024-06-14 13:20:17,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:17,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:20:17,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:20:17,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:20:17,988 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:20:17,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:20:17,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2051981925, now seen corresponding path program 1 times [2024-06-14 13:20:17,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:20:17,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619944929] [2024-06-14 13:20:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:20:17,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:20:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:20:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:20:20,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:20:20,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619944929] [2024-06-14 13:20:20,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619944929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:20:20,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:20:20,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:20:20,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653360664] [2024-06-14 13:20:20,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:20:20,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:20:20,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:20:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:20:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:20:21,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:20:21,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 189 transitions, 1876 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:21,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:20:21,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:20:21,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:20:26,202 INFO L124 PetriNetUnfolderBase]: 14685/19867 cut-off events. [2024-06-14 13:20:26,202 INFO L125 PetriNetUnfolderBase]: For 305795/305902 co-relation queries the response was YES. [2024-06-14 13:20:26,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105901 conditions, 19867 events. 14685/19867 cut-off events. For 305795/305902 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 102806 event pairs, 4061 based on Foata normal form. 116/19945 useless extension candidates. Maximal degree in co-relation 105843. Up to 15537 conditions per place. [2024-06-14 13:20:26,353 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 180 selfloop transitions, 113 changer transitions 0/297 dead transitions. [2024-06-14 13:20:26,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 297 transitions, 3346 flow [2024-06-14 13:20:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:20:26,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:20:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-14 13:20:26,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641509433962264 [2024-06-14 13:20:26,355 INFO L175 Difference]: Start difference. First operand has 127 places, 189 transitions, 1876 flow. Second operand 10 states and 246 transitions. [2024-06-14 13:20:26,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 297 transitions, 3346 flow [2024-06-14 13:20:26,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 297 transitions, 3265 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 13:20:26,751 INFO L231 Difference]: Finished difference. Result has 135 places, 215 transitions, 2405 flow [2024-06-14 13:20:26,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2405, PETRI_PLACES=135, PETRI_TRANSITIONS=215} [2024-06-14 13:20:26,752 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 79 predicate places. [2024-06-14 13:20:26,752 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 215 transitions, 2405 flow [2024-06-14 13:20:26,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:26,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:20:26,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:20:26,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:20:26,753 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:20:26,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:20:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1038756733, now seen corresponding path program 2 times [2024-06-14 13:20:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:20:26,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369190657] [2024-06-14 13:20:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:20:26,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:20:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:20:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:20:29,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:20:29,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369190657] [2024-06-14 13:20:29,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369190657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:20:29,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:20:29,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:20:29,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760611070] [2024-06-14 13:20:29,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:20:29,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:20:29,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:20:29,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:20:29,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:20:29,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:20:29,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 215 transitions, 2405 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:29,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:20:29,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:20:29,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:20:35,773 INFO L124 PetriNetUnfolderBase]: 16447/22117 cut-off events. [2024-06-14 13:20:35,773 INFO L125 PetriNetUnfolderBase]: For 390630/390638 co-relation queries the response was YES. [2024-06-14 13:20:35,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129621 conditions, 22117 events. 16447/22117 cut-off events. For 390630/390638 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 114803 event pairs, 6185 based on Foata normal form. 54/22166 useless extension candidates. Maximal degree in co-relation 129559. Up to 19571 conditions per place. [2024-06-14 13:20:35,960 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 223 selfloop transitions, 76 changer transitions 0/303 dead transitions. [2024-06-14 13:20:35,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 303 transitions, 3782 flow [2024-06-14 13:20:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:20:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:20:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2024-06-14 13:20:35,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188679245283019 [2024-06-14 13:20:35,963 INFO L175 Difference]: Start difference. First operand has 135 places, 215 transitions, 2405 flow. Second operand 10 states and 222 transitions. [2024-06-14 13:20:35,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 303 transitions, 3782 flow [2024-06-14 13:20:36,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 303 transitions, 3571 flow, removed 83 selfloop flow, removed 3 redundant places. [2024-06-14 13:20:36,735 INFO L231 Difference]: Finished difference. Result has 144 places, 237 transitions, 2730 flow [2024-06-14 13:20:36,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2730, PETRI_PLACES=144, PETRI_TRANSITIONS=237} [2024-06-14 13:20:36,735 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 88 predicate places. [2024-06-14 13:20:36,735 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 237 transitions, 2730 flow [2024-06-14 13:20:36,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:36,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:20:36,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:20:36,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:20:36,736 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:20:36,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:20:36,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1525829353, now seen corresponding path program 3 times [2024-06-14 13:20:36,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:20:36,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42058483] [2024-06-14 13:20:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:20:36,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:20:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:20:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:20:39,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:20:39,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42058483] [2024-06-14 13:20:39,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42058483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:20:39,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:20:39,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:20:39,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146689637] [2024-06-14 13:20:39,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:20:39,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:20:39,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:20:39,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:20:39,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:20:39,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:20:39,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 237 transitions, 2730 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:39,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:20:39,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:20:39,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:20:46,617 INFO L124 PetriNetUnfolderBase]: 16907/22713 cut-off events. [2024-06-14 13:20:46,617 INFO L125 PetriNetUnfolderBase]: For 425413/425421 co-relation queries the response was YES. [2024-06-14 13:20:46,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135341 conditions, 22713 events. 16907/22713 cut-off events. For 425413/425421 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 118004 event pairs, 6209 based on Foata normal form. 54/22762 useless extension candidates. Maximal degree in co-relation 135275. Up to 19827 conditions per place. [2024-06-14 13:20:46,815 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 218 selfloop transitions, 93 changer transitions 0/315 dead transitions. [2024-06-14 13:20:46,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 315 transitions, 3954 flow [2024-06-14 13:20:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:20:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:20:46,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 239 transitions. [2024-06-14 13:20:46,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099485420240137 [2024-06-14 13:20:46,817 INFO L175 Difference]: Start difference. First operand has 144 places, 237 transitions, 2730 flow. Second operand 11 states and 239 transitions. [2024-06-14 13:20:46,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 315 transitions, 3954 flow [2024-06-14 13:20:47,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 315 transitions, 3831 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-14 13:20:47,597 INFO L231 Difference]: Finished difference. Result has 152 places, 251 transitions, 3108 flow [2024-06-14 13:20:47,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2617, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3108, PETRI_PLACES=152, PETRI_TRANSITIONS=251} [2024-06-14 13:20:47,598 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-14 13:20:47,599 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 251 transitions, 3108 flow [2024-06-14 13:20:47,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:47,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:20:47,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:20:47,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:20:47,600 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:20:47,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:20:47,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1652895767, now seen corresponding path program 4 times [2024-06-14 13:20:47,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:20:47,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851359674] [2024-06-14 13:20:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:20:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:20:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:20:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:20:51,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:20:51,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851359674] [2024-06-14 13:20:51,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851359674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:20:51,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:20:51,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:20:51,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349454756] [2024-06-14 13:20:51,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:20:51,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:20:51,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:20:51,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:20:51,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:20:51,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2024-06-14 13:20:51,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 251 transitions, 3108 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:51,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:20:51,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2024-06-14 13:20:51,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:20:58,416 INFO L124 PetriNetUnfolderBase]: 19739/26357 cut-off events. [2024-06-14 13:20:58,416 INFO L125 PetriNetUnfolderBase]: For 538765/538773 co-relation queries the response was YES. [2024-06-14 13:20:58,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161787 conditions, 26357 events. 19739/26357 cut-off events. For 538765/538773 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 137713 event pairs, 6500 based on Foata normal form. 54/26406 useless extension candidates. Maximal degree in co-relation 161717. Up to 20517 conditions per place. [2024-06-14 13:20:58,655 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 224 selfloop transitions, 144 changer transitions 0/372 dead transitions. [2024-06-14 13:20:58,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 372 transitions, 4944 flow [2024-06-14 13:20:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:20:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:20:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 259 transitions. [2024-06-14 13:20:58,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444253859348199 [2024-06-14 13:20:58,657 INFO L175 Difference]: Start difference. First operand has 152 places, 251 transitions, 3108 flow. Second operand 11 states and 259 transitions. [2024-06-14 13:20:58,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 372 transitions, 4944 flow [2024-06-14 13:20:59,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 372 transitions, 4809 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-14 13:20:59,621 INFO L231 Difference]: Finished difference. Result has 159 places, 287 transitions, 3830 flow [2024-06-14 13:20:59,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3830, PETRI_PLACES=159, PETRI_TRANSITIONS=287} [2024-06-14 13:20:59,623 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 103 predicate places. [2024-06-14 13:20:59,623 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 287 transitions, 3830 flow [2024-06-14 13:20:59,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:20:59,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:20:59,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:20:59,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:20:59,623 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:20:59,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:20:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash 30567209, now seen corresponding path program 1 times [2024-06-14 13:20:59,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:20:59,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100556339] [2024-06-14 13:20:59,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:20:59,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:20:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:21:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:21:03,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:21:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100556339] [2024-06-14 13:21:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100556339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:21:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:21:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:21:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608661551] [2024-06-14 13:21:03,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:21:03,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:21:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:21:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:21:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:21:03,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-06-14 13:21:03,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 287 transitions, 3830 flow. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:21:03,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:21:03,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-06-14 13:21:03,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand